a:9:{i:0;s:2:"id";i:1;s:3:"uid";i:2;s:7:"systype";i:3;s:8:"receiver";i:4;s:11:"receiver_by";i:5;s:3:"msg";i:6;s:7:"addtime";s:3:"_pk";s:2:"id";s:5:"_type";a:7:{s:2:"id";s:16:"int(11) unsigned";s:3:"uid";s:16:"int(11) unsigned";s:7:"systype";s:19:"tinyint(1) unsigned";s:8:"receiver";s:10:"tinyint(1)";s:11:"receiver_by";s:4:"text";s:3:"msg";s:4:"text";s:7:"addtime";s:16:"int(10) unsigned";}}